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Old 03-13-2014, 09:01 AM   #1
OneQuickSix
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Default Is the "2:3 pulldown" option in MPG2 Encoder hard encoded, or just flags?

I was just wondering if the option for 2:3 pulldown (Extended Settings) for the MPEG2 Encoder in Edius 6.06 is just setting the flags, or is it "hard-encoding" the extra frames?

I'm making an educated guess that is is "hard-encoding" because, it forces the FIELD ORDER option to Interlaced (defaults to DVD spec UPPER FIELD of course), which would seem to indicate it was going to interlace the footage and therefore have to take care of adding the extra frames.

I ended up using a little program called pulldown.exe which just adds the flags, thus no overhead, no interlacing ... keeps it as a progressive signal, and allows modern players/displays to playback the original 24p encode.

EDIT: When I say 24p, I of course really mean 23.98p.
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Old 03-13-2014, 11:02 AM   #2
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I agree, Flags would be great, but I'm skeptical since it is forcing the output to be interlaced after selecting that option.
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Old 03-13-2014, 11:04 AM   #3
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"Pulldown.exe" by Donald Graft sets always flags only!
Great tool & my first choice to do 25p -> 29.97i standards "conversions" for DVD!

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Old 03-13-2014, 11:06 AM   #4
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And yes, your file must be regonized as 'interlaced' since the flags stating it has 59.94 fields now!

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Old 03-13-2014, 11:22 AM   #5
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Quote:
Originally Posted by Andreas_Gumm View Post
"Pulldown.exe" by Donald Graft sets always flags only!
Great tool & my first choice to do 25p -> 29.97i standards "conversions" for DVD!

Andreas
Right, that's what I've been using. But if Edius does the exact same thing, I could save myself the trouble of this extra step.
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Old 03-13-2014, 11:39 AM   #6
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You can remove all flags by using the custom mode.
Set both fields (source & target frame rate) equal, in your case 23.976!
This removes all flags & the file will be flagged with the desired frame rate.

It is more accurate to do this in CMD mode while using fractions:
dgpulldown source.m2v -o flagged.m2v -srcfps 24000/1001 -destfps 24000/1001

If the EDIUS file is hard encoded, you will end up with a file flagged as 23.976 fps & longer running time.

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Old 03-13-2014, 04:27 PM   #7
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The MPEG-2 display properties do not necessarily have to match the encoded data.

Case-in-point, Hollywood DVDs will also report 29.97i because DVD spec requires interlaced MPEG. However, the encoded data is usually 23.976p with repeat flags such that the decoder can output for interlaced playback, or ignore the repeat flags and output the true encoded 23.976p

Maintains compatibility while increasing encoding efficiency (since redundant fields/frames are not encoded).
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Old 03-14-2014, 01:02 AM   #8
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Quote:
Originally Posted by GrassValley_BH View Post
The MPEG-2 display properties do not necessarily have to match the encoded data.

Case-in-point, Hollywood DVDs will also report 29.97i because DVD spec requires interlaced MPEG. However, the encoded data is usually 23.976p with repeat flags such that the decoder can output for interlaced playback, or ignore the repeat flags and output the true encoded 23.976p

Maintains compatibility while increasing encoding efficiency (since redundant fields/frames are not encoded).
Exactly, and that's exactly what I want when taking my 1080 24p (23.98p) project to SD DVD. And that's exactly what I get when I use "pulldown.exe" on my 24p mpeg2 file.

However, what I am wanting to know is if Edius's (V 6.06) option to add the 2:3 pulldown is THIS SAME METHOD (i.e. just repeat flags) or not? If it is, I can skip the "pulldown.exe" conversion step altogether.

Thanks!
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Old 03-14-2014, 01:04 AM   #9
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Why don't you try to remove the flags from an encoded one to look if it works?
I don't have the time.

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Old 03-14-2014, 01:56 AM   #10
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Quote:
Originally Posted by Andreas_Gumm View Post
Why don't you try to remove the flags from an encoded one to look if it works?Andreas
If it is not 2:3 pulldown encoded (or flagged) my authoring software rejects the video and forces you to add the 2:3 pulldown flags.
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